How MailShrine is priced today (updated October 2026): MailShrine is an email suite, not a single flat-fee product. Live: Email Marketing, Business Email, AI Email Lead Generator, Email Sanitization (200 credits per month, refilled every month), and Developer API — Live. In development: Email Automation only. Email Marketing, Email Lead Generator, and Developer API use pay-as-you-go credits (1 credit = 1 email, harvested lead, or API send), with monthly Email Marketing options. Stored contacts do not raise the bill. Business Email is billed by mailbox. Products and plans are differentiated — not every feature lives on every plan. Confirm live packs on Pricing.
Nothing kills a sales operation faster than waking up to a notification that reads: "Your Google Workspace account has been suspended for violating the terms of service."
When your primary sending accounts are suspended, your pipeline freezes instantly. You lose access to your historical communication, and rehabilitating that domain's reputation can take months.
In 2026, Google and Microsoft have intensified their AI-driven bot detection. If you attempt to scale your outreach volume too quickly, you will get caught.
Here is a conservative guide to scaling email volume without inviting a suspension. MailShrine Email Marketing can support the pacing piece with scheduled sending and daily caps you configure—it is not an automatic anti-ban engine.
The "Velocity" Trap
The most common mistake new marketers make is misunderstanding Sending Velocity.
Google doesn't just look at the total number of emails you send in a day; it looks at how fast you send them.
If you connect a brand new Google Workspace account, and on day one you fire off 250 emails simultaneously at exactly 9:00 AM, the algorithm immediately flags you. Human beings do not type and click "send" 250 times in a single second. That is the behavior of a bulk-spam bot.
The Fix: Emulate Human Behavior
To scale safely, you must emulate human irregularity.
- Randomized Delays: Never send emails at exactly 2-minute intervals. Send one, wait 3 minutes, send another, wait 8 minutes, send another.
- Business Hours Only: Stop sending emails at 3:00 AM. Configure sending schedules to operate within the recipient's local business hours (e.g., 9 AM to 5 PM).
- Daily Caps: Restrict your absolute maximum sending volume to 40-50 emails per inbox, per day.
Note: These are sender best practices. When you start a MailShrine Email Marketing campaign, use scheduled sending and stick to the daily limits you set. That is human-emulation-by-habit, not a hidden automation layer that “handles it all.”
The Safe Ramp-Up Schedule
If you buy a new domain today, you cannot send 50 emails tomorrow. The domain is "cold," meaning it has no trust history with ISPs. You must slowly ramp up your volume to prove you are a legitimate business, not a spammer.
Here is a conservative ramp-up schedule for any new inbox. Warm-up here means your volume plan—not a MailShrine peer-to-peer warm-up network.
| Week | Warm-Up Strategy | Outreach Volume |
|---|---|---|
| Week 1-2 | Warm the mailbox only (real conversations or a tool you choose). | 0 cold emails/day |
| Week 3 | Keep warming. Begin sending to highly engaged internal contacts. | 10 emails/day |
| Week 4 | Gradually introduce pure cold lists. | 20 emails/day |
| Week 5 | Ramp up volume. Monitor bounce rates aggressively (Keep < 1%). | 35 emails/day |
| Week 6+ | Cruising altitude. Keep engagement healthy; do not “turn warm-up off” as a mindset. | 50 emails/day |
3 Fatal Errors That Cause Instant Suspension
Even if you follow the perfect ramp-up schedule, certain behaviors will bypass the algorithms and trigger a manual review and immediate suspension. Avoid these at all costs:
1. The Hard Bounce Avalanche
If your email list is composed of scraped, unverified data, 10-15% of your emails will "Hard Bounce" (the address doesn't exist). Google sees high bounce rates as the absolute signature of a spammer. Always run your list through a verification tool before loading it into a MailShrine campaign. MailShrine Email Sanitization is live — scrub the list before you send. If your bounce rate exceeds 3%, you are in the danger zone.
2. Forwarding Traps
Do not buy 10 domains, set up 10 inboxes, and configure them all to Auto-Forward replies to a single, central free @gmail.com address. Google easily detects this clustering behavior and will suspend the entire network simultaneously. Manage replies in the mailbox that sent the thread. Do not invent auto-forward rules to a free Gmail.
3. Phishing Keywords
Writing an email that says "URGENT: Your account summary is attached, click here to claim your $1,000 prize" is a guaranteed ticket to suspension. Avoid extreme urgency, financial promises, and risky links. Write like you are sending a quick note to a colleague.
::youtube-search[cold email sending limits google workspace microsoft 365 avoid suspension 2026]
Citations & References
- Google Workspace Terms of Service: Policies & Guidelines - Official guidelines on bulk commercial sending definitions.
- Microsoft Abuse Limits: Exchange Online Limits - Documentation on receiving and sending limits.
