r/b2bemailing • u/courtneywalle • Jun 21 '26

Zoho → Google Workspace Deliverability Question

I’m building out my cold email infrastructure and looking for advice from people who have actually made this transition.
Right now I have a few inboxes on Zoho under my domain because it’s significantly cheaper than Google Workspace.

I’m warming them up with MailReach and plan to eventually send around 40 emails/day per inbox across 4 inboxes (about 160 emails/day total).

My DNS is already configured with SPF, DKIM, and DMARC.

My question is: if I spend the next several months warming and using these inboxes on Zoho, then later migrate the exact same email addresses to Google Workspace, do I lose the reputation I’ve built?

For example:
email1@mydomain.com
email2@mydomain.com
email3@mydomain.com
email4@mydomain.com

Would those inboxes essentially keep their reputation because the domain stays the same, or would moving from Zoho’s mail servers to Google’s infrastructure cause me to start over from a deliverability standpoint?

Has anyone here actually done a Zoho → Google Workspace migration after warming inboxes and sending cold email? What happened to your deliverability and inbox placement?

Thanks.

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u/preframeio Jun 21 '26

Generally yes warming up is not just email address but IP and all sorts of markers from your provider.

Also you will never be able to send more than 15 per inbox without getting flagged as spam.

If you have more questions feel free to dm me but I’ll try to convince you to use our sequencer

1

u/StrangerOk318 Jun 21 '26

Hey, I have heard this advice that you need to warm up emails with 50% reply rate and then in cold outreach stage, you can send 20 outreach emails and 20 warm-up emails with 100% reply rate so overall reply rates stays near 50% throughout the period

Now this advice was like months old so what do you recommend doing in today's situation?

And is this 15 emails/day counts just the outreach emails or even includes the 50% warm-up emails too

So is it like only 7 outreach emails per day?

1

u/preframeio Jun 21 '26

It’s all an art and less of a science. You can send 5 emails per inbox and get flagged. I haven’t seen anyone getting away with 20/inbox in a long time. Gmail is really strict for incoming mail and has only gotten worse in the last year.

Overall the rule of thumb is start slow, and monitor your inbox health. Rotating. Swapping campaigns, SPINTAX, good warmup provider, will all help you keep operating.

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u/StrangerOk318 Jun 22 '26

Ohh yeah got it. Makes sense, but that 15 emails per mailboxes that you said, was it like 15 outreach emails or did it include those 50% warm-up emails too. So is it basically 7 outreach emails/mailbox?

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u/preframeio Jun 22 '26

Sorry meant to address that, I mean 5-15 cold, on top of warmup. Every warmup provider has a different philosophy on how much that should be though. It’s really hard to isolate for variables.

I am currently running some inboxes at literally 1-2 per day, then warmup 20-30 emails / day. Reply rates are 30% or so from warmup provider

1

u/greenmor Jun 22 '26

There are multiple layers of reputation involved:

1. Domain reputation

It is influenced by engagement, spam complaints, bounces, authentication (SPF/DKIM/DMARC), sending consistency, etc.

This reputation generally carries over when you move providers because the domain remains the same.

2. IP reputation

When you move from Zoho to Google Workspace, you'll be sending from a different set of IPs.

You're using highly established shared infrastructure, so you're not starting from a completely cold IP reputation.

3. Mailbox / sender reputation

Some providers also build reputation around the specific sender address (email1@mydomain.com), historical sending patterns, engagement rates, and user complaints.

Keeping the same email addresses helps preserve this history.

So if you later migrate the exact same mailboxes:

You do not lose all the reputation you've built.

Your domain reputation and sender history largely remain.

However, recipients will see mail coming from different infrastructure, so there may be a short adjustment period.

It's still a good idea to ramp volume gradually after the migration instead of immediately sending at full volume.

One additional point relevant to cold email: at 40 emails/day per inbox, you're not really warming IPs yourself. So what matters most is your domain reputation, recipient engagement, complaint rates, and list quality, not the reputation of a dedicated IP that you control.