Blog/ Switching and migration

How to Announce a New Email Address Without Losing Contacts

Nafiul HasanNafiul Hasan· 9 min read
Illustration of an email announcement moving from an old address to a new one during a mailbox switch.

The short answer

Turn on forwarding and an autoresponder on the old address first, then update security-critical accounts (banks, 2FA recovery, taxes), tell close contacts and clients directly with a short personal note, and update subscriptions last. Keep both addresses live 60 to 90 days, and never ask anyone to click a link to 'confirm' the new one.

How to tell people your email address has changed: the notify order, a template, and how long to keep forwarding before you close the old inbox.

On this page
  1. 01The short answer
  2. 02Before you start
  3. 03Steps
  4. 04A short announcement template you can send today
  5. 05How long should you keep forwarding your old address?
  6. 06Platform differences: forwarding and autoresponders
  7. 07What to do when it doesn't work
  8. 08A faster way to handle the sending side

Changing your email address is the easy part. The harder part is making sure the people and services that matter don't lose track of you in the process — which really comes down to knowing how to tell people your email address has changed without the message landing in a spam folder or looking like a scam.

Get the order and the wording right, and almost nobody notices the switch happened. Get it wrong, and you spend the next year re-explaining yourself to a bank, a client, or an old friend who never got the memo.

The short answer#

There's a fixed order that works, because leaving any of these too long makes fixing it harder, not easier.

  • Turn on forwarding and an autoresponder on the old address before you tell anyone anything.
  • Update security-critical accounts first — banks, brokerages, tax and government logins, insurance, and anywhere the old address is a two-factor or password-recovery destination.
  • Tell close contacts and clients directly, in a short first-person note, not a mail-merge blast.
  • Update your domain registrar, subscriptions, invoicing tools, and any mailing lists you're actually on.
  • Keep both addresses live for 60 to 90 days, then close the old one.

Before you start#

A little preparation saves a lot of chasing later. Do these four things before you send a single announcement.

  • Export or screenshot your contact list from the old account, so you're not relying on memory for who to notify.
  • List every account tied to the old address — bank, brokerage, insurer, tax authority, domain registrar, phone carrier, subscriptions, and anywhere it's listed as a two-factor recovery address.
  • Set a firm cutover date and an end date for the overlap period, and put both on your calendar now.
  • Write one short announcement, then adapt the tone for three audiences: close contacts, clients or vendors, and mailing lists. The paragraph you send your bank's contact form shouldn't be the one you send your best friend.

Steps#

Work through these in order. Security-critical accounts come before people, and people come before the long tail.

  1. 1

    Turn on forwarding and an autoresponder on the old address

    Do this first, before any announcement goes out. Set the old inbox to forward every new message to the new one, and turn on an autoresponder stating the new address plainly. This single step means nothing sent to the old address over the next few months is actually lost, even if a notification reaches someone late.

  2. 2

    Update security-critical accounts

    Banks, brokerages, insurers, tax and government portals, and anywhere the old address is listed for password recovery or two-factor codes. If the old inbox becomes unreachable before these are updated, a routine password reset can lock you out completely.

  3. 3

    Update your domain registrar and any billing tools

    Domain and hosting renewal notices, accounting software, payment processors. A missed renewal notice is exactly how a domain quietly lapses — nobody notices until the site or the business email tied to it goes down.

  4. 4

    Tell close contacts and clients directly

    A short, personal note beats a mass blast every time. Say what changed, when the old address stops working, and that nothing else about you did. People update their address book from a message that sounds like you far more readily than from an obvious template.

  5. 5

    Notify subscriptions, newsletters, and mailing lists

    Update the address on file for anything you actually want to keep receiving. Anything you don't recognize when you get to it is a good excuse to unsubscribe instead of migrating it.

  6. 6

    Update your outgoing signature and any shared team directories

    If you work with others, update the shared contact list or CRM entry too, or colleagues will keep replying to client threads from the old address without realizing it.

  7. 7

    Watch the old inbox through the overlap window

    Check it at least weekly. Reply from the new address, and keep a short list of who's still using the old one so you can nudge them individually before you close it.

Why a badly worded announcement looks like phishing

Never ask someone to click a link to 'confirm' your new address — that's the exact pattern phishing emails use. Send plain text from an address the recipient has heard from before, keep the subject line boring and literal ('My email address is changing'), and if it's someone you talk to regularly, mention it on a call or in a text first.

A short announcement template you can send today#

Adjust the tone per audience. What shouldn't change is that it's short, plainly worded, and never asks the reader to click anything to verify the new address.

Three versions — same structure, different formality
PersonalHi [name] — quick heads up: I'm switching from [old address] to [new address], effective [date]. Both will work until [end date], but please use the new one going forward. Nothing else about me changed, this is just an email switch.
Client / vendorHi [name], I wanted to let you know my email address is changing to [new address], effective [date]. My old address, [old address], stays active through [end date] so nothing falls through the cracks during the switch, but please update your records to the new one.
Mailing list / subscriptionUpdate the email on file for [service] from [old address] to [new address] before [end date] to keep receiving it without interruption.

How long should you keep forwarding your old address?#

Sixty to ninety days covers almost everyone. That's long enough to catch the accounts you forgot about, the friend who only emails twice a year, and the invoice that only goes out quarterly — without babysitting two inboxes indefinitely.

  • Shorter than 30 days, and you'll field 'is this still your email?' messages for months afterward, from people who missed the window.
  • Longer than about 120 days, and forwarding itself becomes the thing you forget about — which defeats the point of setting an end date at all.
Diagram of an old email address forwarding into a new one during the overlap period, before the old address is retired.
The overlap window: keep both addresses reachable until the stragglers catch up.

Platform differences: forwarding and autoresponders#

All four mainstream providers support both forwarding and an autoresponder — the differences are in flexibility and where the setting lives. Verified against Gmail Help and Microsoft Support as of August 2026; providers relabel these menus occasionally, so check the current wording before you rely on it.

ProviderForwardingAutoresponderNotes
GmailYes — forward all mail, or forward-and-keep-a-copy, from Settings → Forwarding and POP/IMAP.Yes — Vacation responder in Settings → General, which stays on for as long as you set it.Forwarding can auto-delete the copy left in the old inbox — turn that off if you still want a backup.
Outlook.com / Microsoft 365Yes — automatic forwarding under Mail → Rules, or the dedicated Forwarding setting.Yes — Automatic Replies, which can run indefinitely rather than only for a fixed vacation window.On a work or school tenant, a Microsoft 365 admin can also set forwarding at the mailbox level.
Yahoo Mail / AOLYes — Mail Forwarding under Settings, though it can require re-confirming periodically.Yes — Vacation Response, with a start and end date you set upfront.Free-tier forwarding behavior has shifted before; check the current setting rather than relying on memory.
iCloud MailYes — via Rules (Redirect or Forward), with an option to keep or delete the original.Yes — via Rules, using a canned auto-reply text.The Rules interface is more limited than Gmail's: one rule per condition, not a dedicated forwarding page.

What to do when it doesn't work#

Most failures aren't dramatic — they're small gaps that show up weeks later.

  • Forwarded mail lands in the new inbox's spam folder. Some providers alter sender-authentication headers when they forward, and the receiving mailbox flags it. Add the old address to your new inbox's contacts before you turn forwarding on.
  • A contact says your announcement 'looked fake.' That usually means the wording matched a phishing pattern — a link, urgency, a request to verify something. Resend it as plain text with no links, and reference something only you'd know.
  • A service won't accept the new address on file. Some account-recovery flows require logging in from the old address one last time to authorize the change — do that before the old inbox stops receiving mail, not after.

The mistake that's hard to undo

Don't delete the old mailbox the moment your overlap window ends, especially if it's tied to any account-recovery flow. Downgrade or archive it instead, and keep it reachable for a few more months as a safety net.

A faster way to handle the sending side#

Sending one honest note to twenty close contacts is easy by hand. Doing it for every client, vendor, and mailing list without it turning into a copy-paste chore is the part that quietly gets skipped — until someone still emails the old address six months later.

Connecting both the old and new mailbox to the same email client keeps mail sent to the old address visible in one place, even after forwarding elsewhere has wound down. AI Emaily does this, and its AI drafting uses a saved reply template and a Personal Context you set yourself to draft a version of the announcement for each audience — client, vendor, personal contact — instead of one generic blast, with every send still going through you for approval first. We build AI Emaily.

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Nafiul Hasan

Written by

Nafiul Hasan

Nafiul Hasan is an entrepreneur and AI automation system builder with 10+ years of experience turning messy, manual workflows into reliable automated systems. He designs and ships AI enterprise solutions end-to-end — the agent logic, the data plumbing, and the product people actually use — and founded AI Emaily to give busy professionals their attention back. He writes here from the builder's seat: what works, what breaks, and how to put AI to work without giving up control.

EntrepreneurAI Automation System BuilderAI EnthusiastBuilds AI Enterprise Solutions10+ years experience
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